5results about How to "Reduce clamping effect" patented technology

The invention provides a directional reinforced throwing blasting and protective layer excavation combined blasting control method, which comprises the following steps of: 1, planning to-be-excavated rock masses controlled by different targets in a zoning manner, designing deep hole bench blasting parameters in a zoning manner, and dividing a side slope excavation region into a main blasting region and a protective layer excavation region, the whole to-be-detonated area is detonated in a segmented and delayed mode through digital detonators; 2, directional reinforced throwing blasting is adopted in the main blasting area, and reinforced throwing holes are formed in the main blasting area; 3, the protective layer excavation area is subjected to buffer presplit zone excavation blasting, a buffer hole and a presplit hole are formed behind the common throwing hole, a buffer presplit zone is formed, excavation of the protective layer is completed, and damage to the reserved slope rock mass is reduced; and 4, combined blasting is conducted in combination with the partition blasting division. Based on the blasting method, the effective blasting slag throwing rate can be remarkably increased, the comprehensive slag turning workload is reduced, and the cost is saved.

This invention discloses a SIA St self-anchoring rubber ring. The invention utilizes the cooperation of a main rubber strip and steel tooth blocks, with the oblique teeth of the steel tooth blocks ensuring smooth insertion of the insertion tube. Upon further pressure, the oblique teeth of the steel tooth blocks press tightly against the outer wall of the insertion tube, preventing slippage. Compared to existing rubber rings made of a single material, the steel tooth blocks and oblique teeth provide a much stronger clamping effect. The main rubber strip not only connects the steel tooth blocks but also prevents deformation or wear that could reduce the clamping effect. Finally, the self-anchoring rubber ring is integrally formed from the main rubber strip and several steel tooth blocks through spraying, drying, molding, and vulcanization. After molding, the back end of the steel tooth block partially overlaps with the back connection surface of the main rubber strip. This manufacturing method ensures a stable connection between the steel tooth blocks and the main rubber strip, preventing separation of the steel tooth blocks and ensuring excellent integrity and connection stability of the entire self-anchoring rubber ring.

The utility model provides single-side welding and double-side forming laser hybrid welding equipment for an aluminum plate without beveling, belongs to the technical field of laser hybrid welding, and aims to solve the problem that long time needs to be consumed when the aluminum plate is positioned. Comprising an equipment supporting box, a reciprocating driving part, a position adjusting lead screw, a movable mounting base, a positioning mounting frame, a first placing groove, a second placing groove and a limiting mounting frame; the reciprocating driving piece is in bolted connection with the right side of the equipment supporting box; the position adjusting lead screw is rotationally connected to the upper portion of the equipment supporting box. The movable mounting seat is in threaded connection with the outer side of the position adjusting screw rod; the positioning mounting frame is welded to the left end face of the movable mounting base. The first placing groove is formed in the middle of the equipment supporting box; the second placing groove is formed in the middle of the equipment supporting box; the limiting mounting frame is in bolted connection with the rear side of the equipment supporting box; automatic clamping and automatic discharging of the aluminum plate are achieved, operation steps are reduced, time is saved, and the welding efficiency of the aluminum plate is improved.

The invention discloses a vertical shaft tunneling blasting method based on shaped charge, which comprises the following steps: drilling an empty hole in the center of an excavation section, sequentially drilling a plurality of slotting holes, a plurality of caving holes and a plurality of peripheral holes from inside to outside around the empty hole, the plurality of slotting holes, the plurality of caving holes and the plurality of peripheral holes are annularly arranged by taking the empty hole as a center; the slotting holes are sequentially filled with one-way shaped charge and stemming from bottom to top; the caving holes are sequentially filled with hole bottom shaped charge, common cartridges and stemming from bottom to top; the peripheral holes are sequentially filled with bidirectional shaped charge and stemming from bottom to top; and all blast holes in the excavation section are subjected to delayed blasting from inside to outside. The hard rock slotting blasting effect can be improved during vertical shaft tunneling blasting, the utilization rate of deep blast holes is increased, and the peripheral forming effect is improved.